<1^ iJ
Peregrine Falcon Surveys and
Monitoring in the Northeast Boreal
Region of Alberta, 2001
Peregrine Falcon Surveys and Monitoring in the
Northeast Boreal Region of Alberta, 2001
Rob Corrigan
Alberta Species at Risk Report No. 57
April 2002
Project Partners:
/dlberia
SUSTAINABLE RESOURCE
DEVELOPMENT
Alberta Conservation
Association
Publication No.: 1/083
ISBN: 0-7785-2315-2 (Printed Edition)
ISBN: 0-7785-2316-0 (On-line Edition)
ISSN: 1496-7219 (Printed Edition)
ISSN: 1496-7146 (On-line Edition)
Illustration: Brian Huffman
For copies of this report, contact:
Information Centre - Publications
Alberta Environment / Alberta Sustainable Resource Development
Main Floor, Great West Life Building
9920 108 Street
Edmonton, Alberta, Canada T5K 2M4
Telephone: (780) 422-2079
OR
Information Service
Alberta Environment / Alberta Sustainable Resource Development
#100,3115 12 Street NE
Calgary, Alberta, Canada T2E 7J2
Telephone: (403) 297-3362
OR
Visit our web site at:
http://www3.gov.ab.ca/srd/fw/riskspecies/
This publication may be cited as:
Corrigan, R. 2002. Peregrine Falcon Surveys and Monitoring in the Northeast Boreal
Region of Alberta, 2001. Alberta Sustainable Resource Development, Fish and Wildlife
Division, Alberta Species at Risk Report No. 57. Edmonton, AB. 12pp.
DISCLAIMER
The views and opinions expressed are those of the author and do not necessarily represent
the policies or positions of the Department or of the Alberta Government.
Digitized by the Internet Archive
in 2016
https://archive.org/details/peregrinefalcons00corr_2
TABLE OF CONTENTS
LIST OF TABLES ii
LIST OF FIGURES ii
ACKNOWLEDGEMENTS iii
EXECUTIVE SUMMARY iv
IJ INTRODUCTION 1
METHODS 2
^ RESULTS 4
3.1. Northeastern Alberta 4
3.2. Edmonton Area .....5
4J DISCUSSION 6
4.1. Northeastern Alberta 6
4.2. Edmonton Area 8
MANAGEMENT IMPLICATIONS AND FUTURE DIRECTION 10
6.0 LITERATURE CITED 12
1
LIST OF TABLES
Table 1. Survey and monitoring terminology and definitions (after Murphy 1990). 2
Table 2 Occupied teiTitories, nesting success and productivity of peregrine falcons in the
Fort Chipewvan study area of Northeastern Alberta. 2001. 4
Table 3. Summary of peregrine falcon young banded in the Fort Chipewvan study area,
2001. 5
Table 4. Occupied territories, nesting success and productivity of peregrine falcons in the
Edmonton area, 200 1 5
Table 5. Summary of peregrine falcon young banded in the Edmonton area 6
LIST OF FIGURES
Figure 1. Fort Chipewvan study area. 3
Figure 2. TerritoiT occupancy in Fort Chipewvan Study Area: 1971-2001 7
Figure 3. Annual chick production in the Fort Chipewvan study area: 1971-2001. 8
Figure 4. Temtory occupancy in the Edmonton area; 1981-2001. 9
Figure 5. Annual chick production in the Edmonton area; 1981-2001 10
11
ACKNOWLEDGEMENTS
Peregrine faleon monitoring in 2001 for the Northeast Region was completed through the
efforts and co-operation of numerous individuals and organizations. From Alberta
Sustainable Resource Development, Fish and Wildlife Division: Matt Besko, John
Follinsbee, Dr. Gord Court, John Martin and Mikael Christensen, from Canadian Wildlife
Service: Geoff Holroyd and Jeff Dixon, and from Wood Buffalo National Park: Mark
Bradley, Barb Johnston and Libby Gunn, all assisted in surveying, monitoring and
banding young. Dr. Gord Court provided technical advice and guidance throughout the
completion of this project.
Funding for this project came from the Species at Risk Program of Alberta Sustainable
Resource Development, Fish and Wildlife Division. The Alberta Conservation
Association contributed equipment and logistical support for the completion of this
project.
EXECUTIVE SUMMARY
Historically, peregrine falcons (Falco peregrinus anatum) nested throughout
Northeastern Alberta, along major river systems. Lake Athabasca and, in the Canadian
shield north of Lake Athabasca. Indiscriminate use of the pesticide DDT during the
1950’s and 1960’s led to a decline of peregrine populations throughout north America.
Peregrine falcons were extirpated in Alberta south of 58° and only a small remnant
population remained in the Lake Athabasca area. Due to population declines, the
peregrine was listed as “endangered” in Canada in 1971 and is currently listed as
“threatened” in Alberta. Following the banning of DDT in Canada, wildlife managers
began intensively managing peregrines, including the development of a captive-breeding
facility.
Peregrines have been monitored annually in northern Alberta since 1971, and during this
period the population has increased from a low of one territorial pair in 1973, to a high of
23, in 2000. During a provincial survey in the summer of 2000, it was found that there
were 48 pairs of territorial peregrines in Alberta. Of the 48 pairs, 29 pairs were located in
the Northeast region of Alberta. Four pairs were located on urban sites in the Edmonton
area, and 25 pairs were located north of 58° in northeastern Alberta. Annual monitoring
of all known nest sites in northern Alberta is logistically difficult due to the
inaccessibility of many of the sites.
In 2001, it was agreed that Alberta Sustainable Resource Development (SRD), Wood
Buffalo National Park (WBNP) and the Canadian Wildlife Service (CWS) would conduct
annual occupancy and productivity monitoring in three study areas of northern Alberta.
These study comprise a majority of the known nesting location in northeastern Alberta.
SRD agreed to participate in annual monitoring of the Fort Chipewyan study area in
conjunction with WBNP and CWS. This report presents results from surveys in the Fort
Chipewyan and Edmonton area during summer 2001.
In 2001, there were ten occupied territories that produced twelve young in Fort
Chipewyan. Nine young were banded at three nest sites as a component of this project.
In the Edmonton area, there were six territorial pairs of peregrines that successfully
fledged 1 6 young, of which seven were captive-raised foster young. Six pairs of
peregrines represent the highest number of occupied territories in Edmonton, since they
began nesting in Edmonton in 1981. Sixteen fledged young is also the greatest number of
young fledged in any one breeding season. All sixteen young were banded for future
identification and two young were known to have died following fledging.
It is recommended that SRD continue to participate in annual monitoring in the Fort
Chipewyan study area and in the Edmonton area. This ongoing effort will allow wildlife
managers to monitor population and productivity trends for recovery planning.
IV
1.0 INTRODUCTION
Due to the widespread use and environmental accumulation of pesticide residues (DDT
and its derivative DDE), the peregrine falcon (Falco peregrinus anatum) population
declined throughout North America during the 1950’s and 1960’s (Peakall et al. 1990).
Since 1970, Alberta has participated in a continent-wide census that occurs every five
years. As a result of the population decline, the peregrine falcon was listed as an
“endangered” species in Canada in 1971 (COSEWIC 2000). By 1975, the anatum sub-
species of peregrine falcons was extirpated in southern Alberta, and only a small remnant
population of breeding peregrines remained in northeastern Alberta (Fyfe et al. 1976).
Following the ban of DDT in Canada in 1969, wildlife managers initiated efforts to
preserve the genetic diversity of native peregrine population by establishing a captive
breeding facility. The Canadian Wildlife Service (CWS) removed peregrines from wild
populations to be used as breeding stock, which would eventually supply captive-raised
peregrines for release into the wild. Young falcons were released into the wild in
northern Alberta through fostering and into southern Alberta through a combination of
fostering and hack-releases. Through these reintroduction efforts, the population of
peregrines in both northern and southern Alberta has increased from three occupied
territories in 1970 (Cade and Fyfe 1970) to 48 known occupied territories in 2000
(Corrigan 2000). As a result of the population increase, the species was down-listed to
“threatened” in Alberta in 2000 (ESCC 2000), which followed the down-listing
nationally in 1999 (COSEWIC 2000).
Throughout the decline and subsequent recovery of peregrines in Alberta, annual
monitoring has been an integral component of managing this species. Due to logistical
restraints and limited access to a number of northern Alberta nesting sites, not all
locations could be surveyed annually for occupancy and productivity. It was decided in
2000, by Alberta Sustainable Resource Development (SRD) Fish and Wildlife Division,
Wood Buffalo National Park (WBNP) and CWS, that the northern population would be
divided into three study areas; Fort Chipewyan, Fort Smith and Peace Point. These three
study areas would be monitored annually for occupancy and productivity, known nesting
locations outside these study areas would be monitored when possible. SRD in
conjunction with WBNP would be responsible for annual monitoring for the Fort
Chipewyan study area. In addition to the Fort Chipewyan nest sites in northeastern
Alberta, SRD continues to annually monitor the population of peregrines that breed in the
Edmonton area on manmade structures.
Historically, there were twelve known peregrine nesting locations on the North
Saskatchewan River between Devon and Fort Saskatchewan (Court 1993). It has been
documented that recovering populations return to historical nesting locations before
establishing new territories (Cade et <3/. 1988). The exception occurs when historical
nesting and foraging habitats have been altered (i.e. due to urbanization or the erection of
multi-story buildings and conversion of foraging habitat to agriculture) which has
occurred in the proximity of most historical nest locations in and around Edmonton. As a
1
result of the creation of preferable nesting structures (tall buildings) and the recovery of
southern Alberta peregrine populations, peregrines began nesting in Edmonton in 1981.
Since the initial occurrence of nesting peregrines in downtown Edmonton, the number of
urban territorial peregrine pairs has risen to a total of six in 2001.
As a component of the ongoing monitoring of peregrines in the Northeast Region ' of
Alberta, SRD provided funding through the Species at Risk Program in 2001 to monitor
occupancy and productivity of the Fort Chipewyan study area and the population of
peregrines in the Edmonton area. Specific objectives for 2001 were to:
1 . Detennine occupancy of the Fort Chipewyan study area and Edmonton
area nest sites,
2. Determine breeding success and productivity of all nesting pairs, and
3. Band young peregrines for future identification.
'For the purpose of this report, Northeast Region refers to Alberta Government, Sustainable Resource Development
regions. See w^v^^^gov.ab.ca/env/regions.html for boundaries.
2.0 METHODS
Terminology relating to the occupancy and productivity of peregrines was taken from
Murphy (1990; Table 1).
Table 1. Survey and monitoring terminology and definitions (after Murphy 1990).
Term
Definition
Occupied Nest or
Territory
• A nest site or territory that is occupied by at least one territorial
adult during some part of the breeding season.
Breeding Pair
• A pair that laid at least one egg during the breeding season.
Productive Pair
• A pair that successfully raised at least one chick to an advanced
stage of development from which the chick was assumed to have
fledged. Chicks that reached an age suitable for banding are
considered to be of advanced age.
Historical Nest
Site
• Site that was documented to have been occupied by breeding
adults prior to the decline of the peregrine falcon population in
southern Alberta, as identified by Court (1993 a).
Known Nest Site
• Site that has been documented to have been occupied by
breeding adults in any prior year (includes historic sites plus new
sites that have been occupied since the 1970s).
The Fort Chipewyan peregrine population has been annually monitored since 1971
(Court 1994). A component of this monitoring was the documentation of all known
nesting territories. A total of 14 different nesting territories have been identified within
2
the study area. Within a particular nesting territory, alternate nesting locations have been
used, but two alternate nest sites within the same territory have never been used in the
same year. All nesting territories within the Fort Chipewyan study area can be accessed
by boat and all territories were visited were visited a minimum of three times to
determine occupancy and breeding productivity. Site visits occurred between 1 1 May
and 1 1 July 2001. Staff from WBNP and CWS conducted initial visits and second visits
and the third site visits were conducted by staff from SRX), WBNP and the Alberta
Conservation Association (AC A). Following the each site visit, data regarding
occupancy, productivity and band information were entered into a database, which is
maintained by WBNP. Nest site occupancy, productivity and banding infonnation was
also entered into the Biodiversity/Species Observation Database (BSOD), which is
maintained by Alberta Fish and Wildlife Division.
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Figure 1. Fort Chipewyan study area. Spectrum Digital Imaging, Courtenay, BC, 2001.
During the third visit, young peregrines were banded with a United States Fish and
Wildlife (USFWS) aluminum band on the right leg (applied with pliers) and a colored
(black) alpha-numeric band on the left leg (applied with rivets). The orientation of the
alpha-numeric symbols were recorded as either horizontal (H) or vertical (V) and whether
a line (-) separated the symbols. All banding was conducted under an Alberta
Environment collection licence (015 CN) and research permit (3989 GP).
Site visits in the Edmonton area occurred between 19 March and 17 September 2001. All
sites were regularly monitored throughout the breeding season to determine occupancy
and breeding success. Monitoring was conducted by staff from SRD, ACA and the
3
public. To minimize disturbance, monitoring was conducted using a 20-60x Bausch and
Lomb Elite ® spotting scope. At times it was necessary to disturb adults to determine
nesting chronology, when this occurred, the observer quickly left the area to a distance
that no longer agitated the adults. Young peregrines were banded using the methods
described above and all information was also entered into BSOD. Any nests that
contained less than four natural young were considered for fostering of captive-raised
young if ages were compatible. Fostering captive-raised young augments natural
productivity that increases the overall number of young entering a population.
3.0 RESULTS
3.1. Northeastern Alberta
During the 2001 -breeding season there were eleven occupied territories in the Fort
Chipewyan study area. One territory (Potato Island) was occupied by a single adult male,
the remaining sites were all occupied by territorial pairs (Table 2). Of the ten sites
occupied by territorial pairs, eight sites were successful at breeding and four sites
successfully raised young (Table 2). The estimated total number of young produced in
the Fort Chipewyan study was twelve. During the third visit, both adults aggressively
defended the nesting site, indicating the presence of young. By assigning the average
brood size (n=3) of the remaining productive sites, a total of twelve young were
produced. A total of nine young were banded at three sites during 2001 (Table 3).
Y oung were not counted or banded at Shelter Point due to the mechanical breakdown of
the boat and the inability to access the site.
Table 2 Occupied territories, nesting success and productivity of peregrine falcons in the
Fort Chipewyan study area of Northeastern Alberta, 2001.
Site Name
Breeding Pair
Productive Pair
# of Fledged Young
Pine Island
Yes
Yes
3
Potato Island
nT'
No
0
Halfway Island
No
No
0
Point Basse
Yes
No
0
Shelter Point
Yes
Yes
(3 *")
Close Call
Yes
No
0
Dog Head
Yes
No
0
Unnamed Island
Yes
No
0
Pushup Lake
No
No
0
Grouse Cape
Yes
Yes
2
Wood Island
Yes
Yes
4
Territory occupied by a single adult male.
*2
Y oung were not counted, the average clutch size was applied to this nest site.
4
Table 3. Summary of peregrine falcon young banded in the Fort Chipewyan study area,
2001.
Site Name
Alpha-numeric
USFWS
Comments
Grouse Cape
B C/R (VH)
816-34585
Male
B L/R (VH)
1807-78687
Female
Pine Island
B K/S (VH)
1807-78735
Female
B W/S (VH)
1807-78720
Female
B C/S (VH)
816-34529
Male
Wood Island
B K/R (VH)
816-34524
Male
B V/S (VH)
816-34531
Male
B P/S (VH)
1807-78698
Female
B U/S (VH)
1807-78719
Female
3.2. Edmonton Area
During the 200 1 -breeding season, six occupied territories were identified in the
Edmonton area (Table 4). Territorial pairs occupied all sites throughout the breeding
season, except at the Clinical Sciences site, where there were two adult females and one
adult male occupied this site. Four of the six sites were successful in breeding and laid at
least one egg, with three sites producing young to fledging age. A total of 16 young were
raised to an advanced age and were assumed to have fledged. Of the 1 6 young, seven
young were captive-raised and fostered into four sites (Table 4). All of the 16 young
were banded with USFWS and alpha-numeric bands and two of these young were found
dead following fledging (Table 5).
Table 4. Occupied territories, nesting success and productivity of peregrine falcons in the
Edmonton area, 2001.
Site Name
Breeding Pair
Troductive Pair
U of Fledged Young
Inland Cement
Yes
Yes
4'Xl)
Downtown-T elus
Yes
Yes
4*(1)
Clinical Sciences
Yes
No
4*(4)
Weber Centre
No
No
0
Esso Plant
No
No
0
Agrium
Yes
Yes
4*(1)
* ( ) indicates the number of captive-raised foster young
5
Table 5. Summary of peregrine falcon young banded in the Edmonton area
Site Name Young (C) Young (Al) Comments
Inland Cement
B KX (VH)
B A/X (VH)
B 2/H (HV)
R HN (VV)
987-29817
987-29818
816-34145
987-29819
Female-found dead
Female
Male
Female- foster young
Downtown
B U/9 (HV)
B 0/Z (VV)
B 0/Y (VV)
R 9A6 (WV)
1807-78657
1807-78658
816-34173
1807-78659
Female
Female
Male
Female-foster young
Clinical
Sciences
R 29 (VV)
R 28 (VV)
R K/E (VV)
R KC (VV)
987-29826
816-34182
1807-78680
1807-78664
Male-foster young
Male- foster young
Female- foster young
Female- foster young
Fort Sask.
(Agrium)
B S/X (VH)
B R/X (VH)
B P/W (VH)
R 5S (HV)
987-29816
987-29810
816-16794
816-34122
Female
Female
Male
Female- foster, found dead
4.0 DISCUSSION
4.1. Northeastern Alberta
The number of occupied territories in the Fort Chipewyan study area has increased
significantly since annual monitoring began in 1971. In 1973, there was only one
occupied territory, and has increased to a high in 2000, when twelve territories were
occupied (Figure 1). However, the rate of increase has slowed since 1995, with
occupancy fluctuating between nine and twelve territories annually. Before the first
intensive survey that occurred for peregrines in Northeastern Alberta in 1970 (Cade and
Fyfe 1970), populations had already declined, therefore, a true historical population
estimate is unknown. Determining when the population stabilizes and reaches carrying
capacity can only be determined through a standard monitoring program. Recovery
planning is dependent upon the availability of long-term population trend data.
6
Year
Figure 2. Territory occupancy in Fort Chipewyan Study Area; 1971-2001 (Alberta
Fisheries and Wildlife unpublished data, Wood Buffalo National Park and
Northeastern Alberta Peregrine Falcon Monitoring 2001, unpublished data).
Annual production of young has been highly variable in the Fort Chipewyan study area.
Production of young has fluctuated from zero (1973, 1975, 1976, 1981, 1982 and 1986)
to a high of 22, in 1997 (Figure 2). Since 1995, production has remained at over twelve
young produced annually, except in 2000, when only four young produced. In 2001, an
estimated twelve young were produced, which is below the average for 1995-2001 of
fourteen. Although the occupancy rate has appeared to stabilize since 1995, productivity
remains variable. Ongoing monitoring of productivity will allow managers to determine
if a downward trend in reproductive success is developing in the Fort Chipewyan study
area. Being able to compare occupancy and productivity of the Fort Chipewyan study
area against Fort Smith and Peace Point will enable managers to detennine if trends that
are developing are regional in scope or confined to a much smaller area.
7
Year
Figure 3. Annual chick production in the Fort Chipewyan study area; 1971-2001.
(Alberta Fisheries and Wildlife unpublished data, Wood Buffalo National Park
and Northeastern Alberta Peregrine Falcon Monitoring 2001, unpublished
data).
4.2. Edmonton Area
Within the Edmonton area there were twelve known peregrine falcon historical nesting
locations on the North Saskatchewan River and its tributaries between Devon and Fort
Saskatchewan (Court 1993). Recovering populations of peregrines have shown a
propensity to return to historical sites during subsequent recovery periods (Cade and Fyfe
1970, Court 1993). None of the historical nesting locations within the Edmonton area
have been re-occupied during the recovery of peregrines in Alberta. The absence of
territorial pairs can be attributed to a variety of factors. Many of the historical nesting
sites are now unsuitable for nesting peregrines. The cliffs have slumped, vegetation has
encroached and urban development has occurred on top of numerous cliffs. High-quality
foraging habitat has been lost in rural areas due the conversion of habitat to agriculture.
In addition to historical nesting habitat becoming unsuitable, new high quality nest sites
have been developed (buildings) in the Edmonton area. Tall urban buildings provide
high “cliff-like” structures, relatively free from natural predators with abundant prey,
which may make urban buildings, preferred nesting sites.
Following the extirpation of peregrines in southern Alberta by 1975 (Fyfe et ah 1976),
the first peregrines to successfully breed in southern Alberta occurred in 1981, in
downtown Edmonton. Peregrines continued to nest in Southern Alberta urban centres
exclusively until 1991, when they were first documented in central Alberta (Stepnisky
1996). The 2000 Provincial Peregrine Falcon Survey found that 14 of 23 known nesting
locations in southern Alberta were in urban centres or on man-made structures (Corrigan
2000). This indicates that peregrines continue to have a preference for urban and man-
made environments over historical rural nesting locations. A new territorial pair of
peregrines was observed in 2001 at the Imperial Oil refinery, which indicates that
8
peregrines will continue to choose urban environments over historical nesting sites. It is
unlikely that peregrines will return to historical nesting locations in the Edmonton area.
The number of occupied territories in Edmonton during the 2001 -breeding season was
six, which is the highest number since peregrines began nesting in Edmonton in 1981
(Figure 3). Four of the six pairs were successful breeders, and three sites fledged a total
of nine natural bom young. In addition, seven captive-raised young were also fledged
through fostering. Young were fostered at the four sites that were successful breeders
and laid eggs. The total number of fledged young for the 2001 -breeding season in
Edmonton was 1 6, and represents the greatest number of young produced in the
Edmonton area (Figure 4).
Year
Figure 4. Territory occupancy in the Edmonton area; 1981-2001 (Alberta Fisheries and
Wildlife unpublished data).
At the Clinical Sciences site, two adult females and one adult male occupied and actively
defended the site throughout the breeding season. Seven eggs were laid and incubated by
both females during the breeding season, but all the eggs were infertile and collected for
pesticide analysis. Four captive-raised young were successfully fledged from this site,
and all three adults were observed participating in feeding and rearing of the young. In
the Edmonton area two young were found dead following fledging, one natural bom
female young at the Inland Cement site and one female foster young at the Fort
Saskatchewan (Agrium) site.
9
Figure 5. Annual chick production in the Edmonton area; 1981-2001 (Alberta Fisheries
and Wildlife unpublished data).
5.0 MANAGEMENT IMPLICATIONS AND FUTURE DIRECTION
Currently, the peregrine falcon is listed as a “threatened” species, both provincially and
nationally (ESCC 2000, COSEWIC 2000). It is unknown whether peregrine population
provincially is approaching historical population levels because there are no accurate pre-
decline population estimates. In order to determine that peregrines are approaching
carrying capacity, ongoing annual monitoring is needed. Productivity in peregrine
populations has a high degree of variability and relying on five-year provincial surveys
will not provide accurate information of occupancy and productivity trends.
Standardized annual monitoring of specific populations will provide biologists and
managers the necessary information to determine when peregrines are reaching carrying
capacity. This information can also provide an early warning should populations and/or
productivity decline. A co-operative effort between SRD, WBNP and CWS should
continue in Northeastern Alberta in the three established study areas. A formal
Memorandum of Understanding (MOU) outlining agency responsibility needs to be
developed that would remain in effect through the 2005 national peregrine falcon survey.
Annual monitoring in the Edmonton area should also continue under the direction of
SRD. Monitoring in Edmonton can be done relatively easily with no additional
allocation of resources. In sites where peregrines show a territorial affinity, suitable
nesting structures should be erected (i.e. Weber Centre). Providing a nesting structure
greatly increases the likelihood nesting and fledging success. The peregrine falcons in
Edmonton have provided an exceptional opportunity for public education and awareness,
and continue to do so. In addition to annual monitoring, an effort should be made to
facilitate the compilation, storage and management of peregrine falcon population and
biological data. Banding of young should continue if an effort is to be made in the future
to identify territorial peregrines. This will enable mangers to determine the
10
demographics of the recovering population. Satellite transmitters may be used to monitor
juvenile dispersal and assist in determining the linkages between nesting and foraging
habitat.
11
6.0 LITERATURE CITED
Cade, TJ. and R. Fyfe. 1970. The North American peregrine survey, 1970. Can. Field-
Naturalist. 84:231-245.
Cade, T.J., J.H. Enderson, C.G. Thelander and C.M. White (Editors). 1988. Peregrine
falcon populations: their management and recovery. The Peregrine Fund Inc.
Boise, Idaho.
Comgan, R. 2000. Survey of the peregrine falcon {Falco peregrinus anatum) in Alberta.
Alberta Sustainable Resource Development, Fish and Wildlife Service, Alberta
Species at Risk Report No. 2. Edmonton, AB. 17pp.
COSEWIC. 2000. Canadian species at risk, November 2000. Committee on the status of
endangered wildlife in Canada. 24 pp.
Court, G.S. 1993. A review of historical nesting records for the Peregrine Falcon {Falco
yeresrimis anatum) in Alberta south of Sb^^N: priorities for a recovering
population. Unpubl. rept., Alberta Fish and Wildlife Division, Edmonton, AB.
Court, G.S. 1994. Population dynamics of American Peregrine Falcon {Falco peregrinus
anatum) breeding in northeastern Alberta, Canada- 1971 to 1 993 : an evaluation of
the need for continued management. Alberta Environmental Protection, Fish and
Wildlife Services, Occasional Report Series No. 14. Edmonton, AB. 25 pp.
Endangered Species Conservation Committee. 2000. First report of the Alberta
Endangered Species Conservation Committee. Alberta Environment, Fisheries and
Wildlife Management Division. 24 pp.
Fyfe, R. W., S. A. Temple, and T. J. Cade. 1976. The North American peregrine falcon
survey. Can. Field-Naturalist 90: 228-273.
Murphy, J. E. 1990. The 1985-86 Canadian Peregrine Falcon, Falco peresrinus, survey.
Canadian Field-Naturalist 104:182-192.
Peakall, D.B., D.G. Noble, J.E. Elliot, J.D. Somers and G. Erikson. 1990.
Environmental contaminants in Canadian Peregrine Falcons, Falco peresrinus: a
toxicological assessment. Canadian Field-Naturalist 104:244-254.
Stepinsky, D.P. 1998. Demographic Features of the Recovering Peregrine Falcon
Population {Falco peregrinus anatum) in Southern Alberta: 1980-1997. Occasional
Report Series Number 15. Alberta Environmental Protection, Natural Resources
Service, Edmonton, AB.
12
List of Titles in This Series
(as of August 2002)
No. 1 Alberta species at risk program and projects 2000-2001, by Alberta Sustainable Resource
Development, Fish and Wildlife Division. (2001)
No. 2 Survey of the peregrine falcon (Falco peregrinus anatimi) in Alberta, by R. Corrigan. (2001)
No. 3 Distribution and relative abundance of the shortjaw cisco {Coregoims zenithiciis) in Alberta, by M.
Steinhilber and L. Rhude. (2001)
No. 4 Survey of the bats of central and northwestern Alberta, by M.J. Vonhof and D. Hobson. (2001)
No. 5 2000 survey of the Trumpeter Swan (Cygnus buccinator) in Alberta, by M.L. James and A. James.
(2001)
No. 6 2000/2001 Brassy Minnow inventory at Musreau Lake and outlet, by T. Ripley. (2001)
No. 7 Colonial nesting waterbird survey in the Northwest Boreal Region - 2000, by M. Hanneman and
M. Heckbert. (2001)
No. 8 Burrowing owl trend block survey and monitoring - Brooks and Hanna areas, by D. Scobie and R.
Russell. (2000)
No. 9 Survey of the Lake Sturgeon (Acipenser fulvescens) fishery on the South Saskatchewan River,
Alberta (June-September, 2000), by L.A. Winkel. (2000)
No. 10 An evaluation of grizzly bear-human conflict in the Northwest Boreal Region of Alberta (1991-
2000) and potential mitigation, by T. Augustyn. (2001)
No. 1 1 Harlequin duck monitoring in the Northern East Slopes of Alberta: 1998-2000 preliminary results,
by J. Kneteman and A. Hubbs. (2000)
No. 12 Distribution of selected small mammals in Alberta, by L. Engley and M. Norton. (2001)
No. 13 Northern leopard frog reintroduction. Raven River - Year 2 (2000), by K. Kendell. (2001)
No. 14 Cumulative effects of watershed disturbances on fish communities in the Kakwa and Simonette
watersheds. The Northern Watershed Project. Study 3 Progress report, by T. Thera and A.
Wildeman. (2001)
No. 15 Harlequin duck research in Kananaskis Country in 2000, by C.M. Smith. (2001)
No. 16 Proposed monitoring plan for harlequin ducks in the Bow Region of Alberta, by C.M. Smith.
(2001)
No. 17 Distribution and relative abundance of small mammals of the western plains of Alberta as
determined from great homed owl pellets, by D. Schowalter. (2001)
No. 1 8 Western blue flag {Iris missoiiriensis) in Alberta: a census of naturally occurring populations for
2000, by R. Ernst. (2000)
No. 19 Assessing chick survival of sage grouse in Canada, by C.L. Aldridge. (2000)
No. 20 Harlequin duck surveys of the Oldman River Basin in 2000, by D. Paton. (2000)
No. 21 Proposed protocols for inventories of rare plants of the Grassland Natural Region, by C. Wallis.
(2001)
No. 22 Utilization of airphoto interpretation to locate prairie rattlesnake {Crotalus viridis viridis)
hibemacula in the South Saskatchewan River valley, by J. Nicholson and S. Rose. (2001)
No. 23 2000/2001 Progress report on caribou research in west central Alberta, by T. Szkorupa. (2001)
No. 24 Census of swift fox ( Viilpes velox) in Canada and Northern Montana: 2000-2001, by A.
Moehrenschlager and C. Moehrenschlager. (2001)
No. 25 Population estimate and habitat associations of the long-billed curlew in Alberta, by E.J. Saunders.
(2001)
No. 26 Aerial reconnaissance for piping plover habitat in east-central Alberta, May 2001 , by D.R.C.
Prescott. (2001)
No. 27 The 2001 international piping plover census in Alberta, by D.R.C. Prescott. (2001)
No. 28 Prairie rattlesnake {Crotalus viridis viridis) monitoring in Alberta - preliminary investigations
(2000), by S.L. Rose. (2001)
No. 29 A survey of short-horned lizard {Phynosoma hernandesi hernandesi) populations in Alberta, by J.
James. (2001)
No. 30 Red-sided garter snake (Thamuophis sirtalis parietalis) education and relocation project - final
report, by L. Takats. (2002)
No. 3 1 Alberta furbearer harvest data analysis, by K.G. Poole and G. Mowat. (2001)
No. 32 Measuring wolverine distribution and abundance in Alberta, by G. Mowat. (2001)
No. 33 Woodland caribou {Rangifer tarandus caribou) habitat classification in northeastern Alberta using
remote sensing, by G.A. Sanchez- Azofeifa and R. Bechtel. (2001)
No. 34 Peregrine falcon surveys and monitoring in the Parkland Region of Alberta, 2001, by R. Corrigan.
(2002)
No. 35 Protocol for monitoring long-toed salamander (Ambystoma macrodactylum) populations in Alberta,
by T. Pretzlaw, M. Huynh, L. Takats and L. Wilkinson. (2002)
No. 36 Long-toed salamander {Ambystoma macrodactylum) monitoring study in Alberta: summary report
1998-2001, by M. Huynh, L. Takats and L. Wilkinson. (2002)
No. 37 Mountain plover habitat and population surveys in Alberta, 2001, by C. Wershler and C. Wallis.
(2002)
No. 38 A census and recommendations for management for western blue flag {Iris missouriensis) in
Alberta, by R. Ernst. (2002)
No. 39 Columbian mountain amphibian surveys, 2001, by D. Paton. (2002)
No. 40 Management and recovery strategies for the Lethbridge population of the prairie rattlesnake, by R.
Ernst. (2002)
No. 41 Western {Aechmophorus occidentalis) and eared {Podiceps nigricollis) grebes of central Alberta:
inventory, survey techniques and management concerns, by S. Hanus, H. Wollis and L.
Wilkinson. (2002)
No. 42 Northern leopard frog reintroduction - year 3 (2001), by K. Kendell. (2002)
No. 43 Survey protocol for the northern leopard frog, by K. Kendell. (2002)
No. 44 Alberta inventory for the northern leopard frog (2000-2001), by K. Kendell. (2002)
No. 45 Fish species at risk in the Milk and St. Mary drainages, by RL&L Environmental Services Ltd.
(2002)
No. 46 Survey of the loggerhead shrike in the southern aspen parkland region, 2000-2001, by H. Kiliaan
and D.R.C. Prescott. (2002)
No. 47 Survey of native grassland butterflies in the Peace parkland region of northwestern Alberta - 2001,
by M. Hervieux. (2002)
No. 48 Caribou range recovery in Alberta; 2001/02 pilot year, by T. Szkorupa. (2002)
No. 49 Peace parkland native grassland stewardship program 2001/02, by A. Baker. (2002)
No. 50 Carnivores and corridors in the Crowsnest Pass, by C. Chetkiewicz. (2002)
No. 5 1 2001 Burrowing owl trend block survey and monitoring. Brooks and Hanna areas, by D. Scobie.
(2002)
No. 52 An evaluation of the ferruginous hawk population in Alberta based on recent trend data, by D.P.
Stepnisky, G.L. Erickson, J. Iwaasa and B. Taylor. (2002)
No. 53 Alberta amphibian call surveys. A pilot year. Final report, by L. Takats and C. Priestley. (2002)
No. 54 Utilization of a roadside survey technique to survey burrowing owl {Athene cuniciilaria hypugaea)
in southeastern Alberta, by J. Nicholson and C. Skiftun. (2002)
No. 55 Alberta species at risk program and projects 2001-2002, by Alberta Sustainable Resource
Development, Fish and Wildlife Division (2002)
No. 56 Developing a habitat-based population viability model for greater sage-grouse in southeastern
Alberta, by C.L. Aldridge (2001)
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